Lamp clamp



Oct. 11, 1932. KENNEDY I 1,881,663

LAMP CLAMP Filed April '7, 1930 flfi [55- J 1. 5 B j IN V EN TOR.

Jaiwgyef fenneqy Patented Oct. 11,1932

UNITED STATES *P ATENTLoFFicE JOHN J. KENNEDY, OF CHICAGO, ILLINOIS,ASSIGNOR TO THE PYLE-NA'IIONAL COM- PANY, OF CHICAGO, ILLINOIS, ACORPORATION OF NEW JERSEY LAMP CLAMP Application filed April 7, 1930.Serial No. 442,077.

My invention relates to improvements in ported on the member A in whichthe lamp lamp clamps and'has for one object to prois adapted to bescrewed. This socket 1s vide a clamp for a screw base socket forelecslotted at B B on opposed sides thereof. trio lights and the likewherein means are Each of these slots is inclined to the horizon- 5provided for yieldingly holding the threaded tal and in line with theline of travel of the lamp base against rotation to hold it in place.thread. B B are U-shaped spring clamp- Another object of my invention isto proing members, each end or the U being vide a spring clamp or lockto hold a threaded socketed in pockets B in the member A, the lamp basein its socket wherein a spring eX- central part of the U being bentinwardly tends for an appreciable distance in a direcand penetratingthrough the slots B B into tion parallel with the threads on the basethe interior of the socket. These interiorly whereby the spring membermay penetrate penetrating portions of the U springs B are and engage theroot circle. Other objects curved as indicated in Figure 5 so as toconwill appear from time to time throughout the form generally to thecurvature of the lamp I specification and claims. base whereby when thelamp is screwed into My invention is illustrated more or less thesocket, it engages these springs and diagrammatically in theaccompanying spreads them so that the springs are under drawing, whereintension and grip the lamp base to prevent Figure l is a side elevationin part section rattling loose of the lamp.

7 of the socket; I claim:

Figure 2 is a plan view of the socket; 1. In combination, a threadedsocket for Figure 3 is a detail of the socket, a view he electric lightsand the like, a locking spring ing taken placed 90 from the position ofadapted to penetrate the socket and engage Figure 1; I the threaded lampbase, the spring having an Figure 4 is a detail similar to Figure 3;elongated bent arm disposed where it en-' this view being taken in thesame direction as gages the base in line with the line of ad- Figure 1;Vance oi the thread, the spring comprising a Figure5 is a perspectiveview of the spring U-shaped structure, the two arms of the U support;being fixed in position, the central bent por- 30 Like parts areindicated by like characters tion being the part which engages the lampthroughout the specification and drawing. base.

A is a supporting base or housing, A an in- 2. In combination, athreaded socket for sulating ring encircling the housing and proelectriclights and the like, a locking spring jecting thereabove. A is anelectric lamp adapted to penetrate the socket and engage bulb having athreaded base A A is a supthe threaded lamp base, the spring having an Yporting collar flanged at the bottom as at A elongated arm disposedwhere it engages the and perforated at A to be engaged by holdbase inline with the line of advance of the ing screws which lock this collarin position thread, the spring comprising a U-shaped on the base A.structure, the two arms of the U being fixed B B are terminal blocks onthe base A havin position, the central portion being the part ing screw13 to engage conductors. One of which engages the lamp base, suchcentral these blocks is connected to the supporting portion being curvedto conform to the conring A, the other to a spring contact finger tourof the base.

B on the base substantially concentric with 3. An electric light socketcomprising a the member A. B is a threaded socket supsupporting member,a collar mounted there- 1 socket.

on, a threaded light base supported by the collar, the wall of the basebeing slotted, aU- shaped spring,- the ends of the U being socketed onthe collar, theicentral portion of the U penetrating the slot to engagean electric light base, the U whei'e it engages the base being elongatedand extending In line W1th the line of advance of the thread of thedChicago, county of Cook and ois, thisBlst day of March 1930. a

' JOHN J KEITNEDY.

Signe

